and Answers
Two compartments: FFM and FM. - ANS Fat Mass (FM) - classified into 2 different categories
(essential and storage fat)
Fat Free Mass (FFM) - consists of npn-fat body mass and consist of protein (muscles) , water,
and minerals (bones)
essential and storage fat - ANS -Essential fat consists of the fat stored in the marrow of
bones, heart, lungs, liver, spleen, kidneys, intestines, muscles, and lipid-rich tissues of the
central nervous
system.
-Storage fatty tissue that surrounds and protects organs
storage fat - ANS Reference man: approximately 12% storage fat
Reference woman: approximately 15% storage fat
Essential body fat of males and females. - ANS 3% of body weight is essential fat (both male
& female)
9% female sex specific for butt, boobs,
The difference in the extra fat for women and men explains the gender difference in body
composition
In total men have 3% essential fat whereas women carry fat 12%
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, Methods of measuring body composition (weaknesses and strengths). - ANS girth
measurement, skinfold measurement, bioelectrical impedance analysis, hydrostatic weighing
Height/Weight: - ANS Weakness - 40% of population can be inaccurately classified
Strength- easy to use and widely available
Body Mass Index(BMI) - ANS Weakness - does not consider body composition in the weight
measurement, may incorrectly classify those with high muscle mass as obese
strength- - widely used and accepted in clinical environment
Girth Measurement - ANS limb and trunk measurements taken with measuring tape, used to
estimate body fat
Waist-to-Hip Ratio (WHR) - ANS determine fat pattern
Men : <0.95 is pear shape, > 0.95 is apple
Women : <0.8 pear shape > 0.8 is apple
Skinfold Measurement: - ANS skinfold calipers to measure subcutaneous fat to estimated
total % body fat, based on theory that approximately 50% of fat is subcutaneous
Men: chest, abdomen, thigh
Women: triceps, thigh, suprailium
Bioelectrical Impedance Analysis (BIA) - ANS low level electrical current travels through body
and measure's body's resistance to the current, fat is a poor conductor because it contains little
water
Hydrostatic Weighing - ANS Weakness: hydration levels and ambient temperature
Hydrostatic Weighing
gold standard, based on principle of water displacement
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